通过身份证获取年龄值

本文主要是介绍通过身份证获取年龄值，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

package com.gson.util;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

/**
* 测试
* @author lenovo
*
*/
public class MyTest {

/**
*
* @param args
*/
public static void main(String[] args) {
int returnAge = getAgeByIdCard("4305811999011160XX");
System.out.println("returnAge="+returnAge);
}

/**
* 根据身份编号获取年龄
*
* @param idCard
* 身份编号
* @return 年龄
*/
public static int getAgeByIdCard(String idCard) {
int iAge = 0;
if (idCard.length() == CHINA_ID_MIN_LENGTH) {
idCard = conver15CardTo18(idCard);
}
String year = idCard.substring(6, 10);
Calendar cal = Calendar.getInstance();
int iCurrYear = cal.get(Calendar.YEAR);
iAge = iCurrYear - Integer.valueOf(year);
return iAge;
}



/**
* 将15位身份证号码转换为18位
*
* @param idCard
* 15位身份编码
* @return 18位身份编码
*/
public static String conver15CardTo18(String idCard) {
String idCard18 = "";
if (idCard.length() != CHINA_ID_MIN_LENGTH) {
return null;
}
if (isNum(idCard)) {
// 获取出生年月日
String birthday = idCard.substring(6, 12);
Date birthDate = null;
try {
birthDate = new SimpleDateFormat("yyMMdd").parse(birthday);
} catch (ParseException e) {
e.printStackTrace();
}
Calendar cal = Calendar.getInstance();
if (birthDate != null)
cal.setTime(birthDate);
// 获取出生年(完全表现形式,如：2010)
String sYear = String.valueOf(cal.get(Calendar.YEAR));
idCard18 = idCard.substring(0, 6) + sYear + idCard.substring(8);
// 转换字符数组
char[] cArr = idCard18.toCharArray();
if (cArr != null) {
int[] iCard = converCharToInt(cArr);
int iSum17 = getPowerSum(iCard);
// 获取校验位
String sVal = getCheckCode18(iSum17);
if (sVal.length() > 0) {
idCard18 += sVal;
} else {
return null;
}
}
} else {
return null;
}
return idCard18;
}
/**
* 数字验证
*
* @param val
* @return 提取的数字。
*/
public static boolean isNum(String val) {
return val == null || "".equals(val) ? false : val.matches("^[0-9]*$");
}
/**
* 将字符数组转换成数字数组
*
* @param ca
* 字符数组
* @return 数字数组
*/
public static int[] converCharToInt(char[] ca) {
int len = ca.length;
int[] iArr = new int[len];
try {
for (int i = 0; i < len; i++) {
iArr[i] = Integer.parseInt(String.valueOf(ca[i]));
}
} catch (NumberFormatException e) {
e.printStackTrace();
}
return iArr;
}
/**
* 将身份证的每位和对应位的加权因子相乘之后，再得到和值
*
* @param iArr
* @return 身份证编码。
*/
public static int getPowerSum(int[] iArr) {
int iSum = 0;
if (power.length == iArr.length) {
for (int i = 0; i < iArr.length; i++) {
for (int j = 0; j < power.length; j++) {
if (i == j) {
iSum = iSum + iArr[i] * power[j];
}
}
}
}
return iSum;
}

/**
* 将power和值与11取模获得余数进行校验码判断
*
* @param iSum
* @return 校验位
*/
public static String getCheckCode18(int iSum) {
String sCode = "";
switch (iSum % 11) {
case 10:
sCode = "2";
break;
case 9:
sCode = "3";
break;
case 8:
sCode = "4";
break;
case 7:
sCode = "5";
break;
case 6:
sCode = "6";
break;
case 5:
sCode = "7";
break;
case 4:
sCode = "8";
break;
case 3:
sCode = "9";
break;
case 2:
sCode = "x";
break;
case 1:
sCode = "0";
break;
case 0:
sCode = "1";
break;
}
return sCode;
}

/** 中国公民身份证号码最小长度。 */
public static final int CHINA_ID_MIN_LENGTH = 15;

/** 中国公民身份证号码最大长度。 */
public static final int CHINA_ID_MAX_LENGTH = 18;

/** 省、直辖市代码表 */
public static final String cityCode[] = {
"11", "12", "13", "14", "15", "21", "22", "23", "31", "32", "33", "34", "35", "36", "37", "41",
"42", "43", "44", "45", "46", "50", "51", "52", "53", "54", "61", "62", "63", "64", "65", "71",
"81", "82", "91"
};

/** 每位加权因子 */
public static final int power[] = {
7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2
};

/** 第18位校检码 */
public static final String verifyCode[] = {
"1", "0", "X", "9", "8", "7", "6", "5", "4", "3", "2"
};
/** 最低年限 */
public static final int MIN = 1930;
public static Map<String, String> cityCodes = new HashMap<String, String>();
/** 台湾身份首字母对应数字 */
public static Map<String, Integer> twFirstCode = new HashMap<String, Integer>();
/** 香港身份首字母对应数字 */
public static Map<String, Integer> hkFirstCode = new HashMap<String, Integer>();
static {
cityCodes.put("11", "北京");
cityCodes.put("12", "天津");
cityCodes.put("13", "河北");
cityCodes.put("14", "山西");
cityCodes.put("15", "内蒙古");
cityCodes.put("21", "辽宁");
cityCodes.put("22", "吉林");
cityCodes.put("23", "黑龙江");
cityCodes.put("31", "上海");
cityCodes.put("32", "江苏");
cityCodes.put("33", "浙江");
cityCodes.put("34", "安徽");
cityCodes.put("35", "福建");
cityCodes.put("36", "江西");
cityCodes.put("37", "山东");
cityCodes.put("41", "河南");
cityCodes.put("42", "湖北");
cityCodes.put("43", "湖南");
cityCodes.put("44", "广东");
cityCodes.put("45", "广西");
cityCodes.put("46", "海南");
cityCodes.put("50", "重庆");
cityCodes.put("51", "四川");
cityCodes.put("52", "贵州");
cityCodes.put("53", "云南");
cityCodes.put("54", "西藏");
cityCodes.put("61", "陕西");
cityCodes.put("62", "甘肃");
cityCodes.put("63", "青海");
cityCodes.put("64", "宁夏");
cityCodes.put("65", "新疆");
cityCodes.put("71", "台湾");
cityCodes.put("81", "香港");
cityCodes.put("82", "澳门");
cityCodes.put("91", "国外");
twFirstCode.put("A", 10);
twFirstCode.put("B", 11);
twFirstCode.put("C", 12);
twFirstCode.put("D", 13);
twFirstCode.put("E", 14);
twFirstCode.put("F", 15);
twFirstCode.put("G", 16);
twFirstCode.put("H", 17);
twFirstCode.put("J", 18);
twFirstCode.put("K", 19);
twFirstCode.put("L", 20);
twFirstCode.put("M", 21);
twFirstCode.put("N", 22);
twFirstCode.put("P", 23);
twFirstCode.put("Q", 24);
twFirstCode.put("R", 25);
twFirstCode.put("S", 26);
twFirstCode.put("T", 27);
twFirstCode.put("U", 28);
twFirstCode.put("V", 29);
twFirstCode.put("X", 30);
twFirstCode.put("Y", 31);
twFirstCode.put("W", 32);
twFirstCode.put("Z", 33);
twFirstCode.put("I", 34);
twFirstCode.put("O", 35);
hkFirstCode.put("A", 1);
hkFirstCode.put("B", 2);
hkFirstCode.put("C", 3);
hkFirstCode.put("R", 18);
hkFirstCode.put("U", 21);
hkFirstCode.put("Z", 26);
hkFirstCode.put("X", 24);
hkFirstCode.put("W", 23);
hkFirstCode.put("O", 15);
hkFirstCode.put("N", 14);
}
}

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